My new desktop machine based on a GA-EP45-DS3R is now up and running, BIOS is the latest F11e.
One strange thing I still couldn't resolve: On power-on or reboot, I frequently get a system halt due to an unrecognized USB keyboard ("Keyboard error - no keyboard present" or something similar). This does not always happen, perhaps on every fifth or tenth (re)boot, but still too often to file it somewhere under "maybe a buggy keyboard".
Question: Did anybody with a GA-EP45-DS3R experience similar problems? - Thanks for every hint!